关于纤维增强地质聚合物稳定岩砂亚材料的压缩性能和数值模拟的研究
Shuai Pang1,2, Weiwei Wang3, Xiaoai Wang4
1College of Water Resources and Architectural Engineering, Northwest A&F University, 23# Wei-Hui Road, , Yangling City, 712100, Shaanxi, China.
Scientific reports
|March 16, 2025
概括
将聚烯纤维添加到地质聚合物稳定的岩沙中,可以提高亚强度和性. 这种纤维增强减少了道路子基层的动态反应和位移,促进了岩沙的利用.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 地质技术工程 地质技术工程
背景情况:
- 地质聚合物稳定的岩沙是用于基层建筑的有希望的材料.
- 提高这些材料的压力强度和性对于基础设施开发至关重要.
- 在土木工程中,高效地利用岩沙资源是一个持续的挑战.
研究的目的:
- 为了提高地质聚合物稳定岩沙子级的压力强度和性.
- 研究增强强度和抗裂的背后机制.
- 通过使用数值模拟来评估纤维增强材料在道路亚基应用中的性能.
主要方法:
- 用聚烯纤维制备地质聚合物稳定的岩沙样本.
- 不受限制的压力强度 (UCS) 测试以确定最佳的混合比率.
- 扫描电子显微镜 (SEM) 用于微观分析材料结构和机制.
- 有限元数值模拟 (FLAC3D 6.0) 用于分析分级动态响应和位移.
主要成果:
- 确定了1.5%NaOH,0.5%纤维含量和12毫米纤维长度的最佳混合比率,最大限度地提高了峰值和残留UCS.
- SEM揭示了由渣,飞灰和溶液组成的3D拓网络结构,增强了粒子和纤维的结合.
- 纤维增强有效地抑制了粒子脱位和裂传播,显著改善了残留的UCS.
- FLAC3D模拟显示,与非增强型相比,纤维增强型子基具有较小的动态响应冲击面积.
结论:
- 纳入聚烯纤维显著提高了地质聚合物稳定岩沙的机械性能.
- 3D光纤网络结构是提高强度,性和抗裂的关键.
- 纤维增强地质聚合物稳定的岩沙是道路亚基工程的可行材料,可以减少动态冲击.
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